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<pre><span class="sourceLineNo">001</span>package ca.uhn.hl7v2.hoh.util;<a name="line.1"></a>
<span class="sourceLineNo">002</span><a name="line.2"></a>
<span class="sourceLineNo">003</span>import java.io.IOException;<a name="line.3"></a>
<span class="sourceLineNo">004</span>import java.io.InputStream;<a name="line.4"></a>
<span class="sourceLineNo">005</span>import java.net.SocketTimeoutException;<a name="line.5"></a>
<span class="sourceLineNo">006</span><a name="line.6"></a>
<span class="sourceLineNo">007</span>public class SplitInputStream extends InputStream {<a name="line.7"></a>
<span class="sourceLineNo">008</span><a name="line.8"></a>
<span class="sourceLineNo">009</span>        private int myBytesUntilSplit;<a name="line.9"></a>
<span class="sourceLineNo">010</span>        private InputStream myWrap;<a name="line.10"></a>
<span class="sourceLineNo">011</span><a name="line.11"></a>
<span class="sourceLineNo">012</span>        public SplitInputStream(InputStream theWrap, int theSplitPoint) {<a name="line.12"></a>
<span class="sourceLineNo">013</span>                myBytesUntilSplit = theSplitPoint;<a name="line.13"></a>
<span class="sourceLineNo">014</span>                myWrap = theWrap;<a name="line.14"></a>
<span class="sourceLineNo">015</span>        }<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>        /*<a name="line.17"></a>
<span class="sourceLineNo">018</span>         * (non-Javadoc)<a name="line.18"></a>
<span class="sourceLineNo">019</span>         * <a name="line.19"></a>
<span class="sourceLineNo">020</span>         * @see java.io.InputStream#read(byte[])<a name="line.20"></a>
<span class="sourceLineNo">021</span>         */<a name="line.21"></a>
<span class="sourceLineNo">022</span>        @Override<a name="line.22"></a>
<span class="sourceLineNo">023</span>        public int read(byte[] theB) throws IOException {<a name="line.23"></a>
<span class="sourceLineNo">024</span>                throw new UnsupportedOperationException();<a name="line.24"></a>
<span class="sourceLineNo">025</span>        }<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>        /*<a name="line.27"></a>
<span class="sourceLineNo">028</span>         * (non-Javadoc)<a name="line.28"></a>
<span class="sourceLineNo">029</span>         * <a name="line.29"></a>
<span class="sourceLineNo">030</span>         * @see java.io.InputStream#read(byte[], int, int)<a name="line.30"></a>
<span class="sourceLineNo">031</span>         */<a name="line.31"></a>
<span class="sourceLineNo">032</span>        @Override<a name="line.32"></a>
<span class="sourceLineNo">033</span>        public int read(byte[] theB, int theOff, int theLen) throws IOException {<a name="line.33"></a>
<span class="sourceLineNo">034</span>                if (myBytesUntilSplit &lt; 0) {<a name="line.34"></a>
<span class="sourceLineNo">035</span>                        // nothing<a name="line.35"></a>
<span class="sourceLineNo">036</span>                } else if (myBytesUntilSplit &gt; 0 &amp;&amp; theLen &gt; myBytesUntilSplit) {<a name="line.36"></a>
<span class="sourceLineNo">037</span>                        theLen = myBytesUntilSplit;<a name="line.37"></a>
<span class="sourceLineNo">038</span>                } else {<a name="line.38"></a>
<span class="sourceLineNo">039</span>                        myBytesUntilSplit = -1;<a name="line.39"></a>
<span class="sourceLineNo">040</span>                        theLen = 0;<a name="line.40"></a>
<span class="sourceLineNo">041</span>                        throw new SocketTimeoutException();<a name="line.41"></a>
<span class="sourceLineNo">042</span>                }<a name="line.42"></a>
<span class="sourceLineNo">043</span>                int retVal = myWrap.read(theB, theOff, theLen);<a name="line.43"></a>
<span class="sourceLineNo">044</span>                myBytesUntilSplit -= retVal;<a name="line.44"></a>
<span class="sourceLineNo">045</span>                return retVal;<a name="line.45"></a>
<span class="sourceLineNo">046</span>        }<a name="line.46"></a>
<span class="sourceLineNo">047</span><a name="line.47"></a>
<span class="sourceLineNo">048</span>        /*<a name="line.48"></a>
<span class="sourceLineNo">049</span>         * (non-Javadoc)<a name="line.49"></a>
<span class="sourceLineNo">050</span>         * <a name="line.50"></a>
<span class="sourceLineNo">051</span>         * @see java.io.InputStream#skip(long)<a name="line.51"></a>
<span class="sourceLineNo">052</span>         */<a name="line.52"></a>
<span class="sourceLineNo">053</span>        @Override<a name="line.53"></a>
<span class="sourceLineNo">054</span>        public long skip(long theN) throws IOException {<a name="line.54"></a>
<span class="sourceLineNo">055</span>                myBytesUntilSplit -= theN;<a name="line.55"></a>
<span class="sourceLineNo">056</span>                return myWrap.skip(theN);<a name="line.56"></a>
<span class="sourceLineNo">057</span>        }<a name="line.57"></a>
<span class="sourceLineNo">058</span><a name="line.58"></a>
<span class="sourceLineNo">059</span>        /*<a name="line.59"></a>
<span class="sourceLineNo">060</span>         * (non-Javadoc)<a name="line.60"></a>
<span class="sourceLineNo">061</span>         * <a name="line.61"></a>
<span class="sourceLineNo">062</span>         * @see java.io.InputStream#available()<a name="line.62"></a>
<span class="sourceLineNo">063</span>         */<a name="line.63"></a>
<span class="sourceLineNo">064</span>        @Override<a name="line.64"></a>
<span class="sourceLineNo">065</span>        public int available() throws IOException {<a name="line.65"></a>
<span class="sourceLineNo">066</span>                return myBytesUntilSplit &gt;= 0 ? Math.min(myBytesUntilSplit, myWrap.available()) : myWrap.available();<a name="line.66"></a>
<span class="sourceLineNo">067</span>        }<a name="line.67"></a>
<span class="sourceLineNo">068</span><a name="line.68"></a>
<span class="sourceLineNo">069</span>        /*<a name="line.69"></a>
<span class="sourceLineNo">070</span>         * (non-Javadoc)<a name="line.70"></a>
<span class="sourceLineNo">071</span>         * <a name="line.71"></a>
<span class="sourceLineNo">072</span>         * @see java.io.InputStream#close()<a name="line.72"></a>
<span class="sourceLineNo">073</span>         */<a name="line.73"></a>
<span class="sourceLineNo">074</span>        @Override<a name="line.74"></a>
<span class="sourceLineNo">075</span>        public void close() throws IOException {<a name="line.75"></a>
<span class="sourceLineNo">076</span>                myWrap.close();<a name="line.76"></a>
<span class="sourceLineNo">077</span>        }<a name="line.77"></a>
<span class="sourceLineNo">078</span><a name="line.78"></a>
<span class="sourceLineNo">079</span>        /*<a name="line.79"></a>
<span class="sourceLineNo">080</span>         * (non-Javadoc)<a name="line.80"></a>
<span class="sourceLineNo">081</span>         * <a name="line.81"></a>
<span class="sourceLineNo">082</span>         * @see java.io.InputStream#mark(int)<a name="line.82"></a>
<span class="sourceLineNo">083</span>         */<a name="line.83"></a>
<span class="sourceLineNo">084</span>        @Override<a name="line.84"></a>
<span class="sourceLineNo">085</span>        public synchronized void mark(int theReadlimit) {<a name="line.85"></a>
<span class="sourceLineNo">086</span>                throw new UnsupportedOperationException();<a name="line.86"></a>
<span class="sourceLineNo">087</span>        }<a name="line.87"></a>
<span class="sourceLineNo">088</span><a name="line.88"></a>
<span class="sourceLineNo">089</span>        /*<a name="line.89"></a>
<span class="sourceLineNo">090</span>         * (non-Javadoc)<a name="line.90"></a>
<span class="sourceLineNo">091</span>         * <a name="line.91"></a>
<span class="sourceLineNo">092</span>         * @see java.io.InputStream#reset()<a name="line.92"></a>
<span class="sourceLineNo">093</span>         */<a name="line.93"></a>
<span class="sourceLineNo">094</span>        @Override<a name="line.94"></a>
<span class="sourceLineNo">095</span>        public synchronized void reset() throws IOException {<a name="line.95"></a>
<span class="sourceLineNo">096</span>                throw new UnsupportedOperationException();<a name="line.96"></a>
<span class="sourceLineNo">097</span>        }<a name="line.97"></a>
<span class="sourceLineNo">098</span><a name="line.98"></a>
<span class="sourceLineNo">099</span>        /*<a name="line.99"></a>
<span class="sourceLineNo">100</span>         * (non-Javadoc)<a name="line.100"></a>
<span class="sourceLineNo">101</span>         * <a name="line.101"></a>
<span class="sourceLineNo">102</span>         * @see java.io.InputStream#markSupported()<a name="line.102"></a>
<span class="sourceLineNo">103</span>         */<a name="line.103"></a>
<span class="sourceLineNo">104</span>        @Override<a name="line.104"></a>
<span class="sourceLineNo">105</span>        public boolean markSupported() {<a name="line.105"></a>
<span class="sourceLineNo">106</span>                throw new UnsupportedOperationException();<a name="line.106"></a>
<span class="sourceLineNo">107</span>        }<a name="line.107"></a>
<span class="sourceLineNo">108</span><a name="line.108"></a>
<span class="sourceLineNo">109</span>        @Override<a name="line.109"></a>
<span class="sourceLineNo">110</span>        public int read() throws IOException {<a name="line.110"></a>
<span class="sourceLineNo">111</span>                if (myBytesUntilSplit == 0) {<a name="line.111"></a>
<span class="sourceLineNo">112</span>                        myBytesUntilSplit--;<a name="line.112"></a>
<span class="sourceLineNo">113</span>                        throw new SocketTimeoutException();<a name="line.113"></a>
<span class="sourceLineNo">114</span>                }<a name="line.114"></a>
<span class="sourceLineNo">115</span>                int retVal = myWrap.read();<a name="line.115"></a>
<span class="sourceLineNo">116</span>                if (retVal != -1) {<a name="line.116"></a>
<span class="sourceLineNo">117</span>                        myBytesUntilSplit--;<a name="line.117"></a>
<span class="sourceLineNo">118</span>                }<a name="line.118"></a>
<span class="sourceLineNo">119</span>                return retVal;<a name="line.119"></a>
<span class="sourceLineNo">120</span>        }<a name="line.120"></a>
<span class="sourceLineNo">121</span><a name="line.121"></a>
<span class="sourceLineNo">122</span>}<a name="line.122"></a>




























































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